Tonometry2012
Tonometry2012
Tonometry2012
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
Perkins hand held tonometer<br />
•Endpoint operation of the instrument is the same as the<br />
Goldmann<br />
•doubling prism is used to observe two split semi-circles<br />
and a thumbwheel is used to align the fluorescein mires<br />
for an IOP measurement.<br />
•An advantages of this type of Goldmann tonometer is<br />
that it can be used in any position.<br />
•Has been calibrated for sheep, cattle, dogs and cats<br />
•Relies on a clear regular cornea<br />
•Maximal scale reading = 5 ( maximal IOP ≤ 50mmHg)